$OpenBSD: patch-net_disk_cache_blockfile_disk_format_h,v 1.3 2016/03/06 10:51:14 robert Exp $
--- net/disk_cache/blockfile/disk_format.h.orig.port	Wed Feb 24 00:02:01 2016
+++ net/disk_cache/blockfile/disk_format.h	Thu Mar  3 09:43:26 2016
@@ -149,7 +149,9 @@ struct RankingsNode {
 };
 #pragma pack(pop)
 
+#if !defined(OS_BSD)
 static_assert(sizeof(RankingsNode) == 36, "bad RankingsNode");
+#endif
 
 }  // namespace disk_cache
 
